09-08-2016, 09:40 PM | #46 |
Join Date: May 2016
Location: Bismarck, ND
Posts: 868
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I think I put my neck out of place. It is also hard to see anything with the tiny pictures.
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2015 and 3/4 RPS Hawk 250. Most people would call it a 2016 but the MCO didn't. |
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09-09-2016, 09:26 AM | #47 |
Join Date: May 2016
Posts: 237
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The high speed wobble is diminished/gone. could it be the geometry was off due to being soo jacked up in the rear?
From what I know a small change in the rake and trail of a bike can reflect bjg changes in the stability. Dropping the rear a few inches would have a small effect on the rake and trail. I allways blamed the tires for the wobble. Rake effects trail, so raising the rear lowers trail and makes the bike easy to turn, but less stabil at high speed straight line. lowering the rear increares rake and trail and increases the sraight line stability, wile incresing the effort required to turn in on a corner. Im going riding at Limestone NY Tommorow so i will get a chance to test it in a big way. |
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09-12-2016, 09:11 AM | #48 |
Join Date: May 2016
Posts: 237
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does anyone know the spring weight on the hawks rear shock?
I've found a dimensionally vorrect shock, with adjustable dampening and preload with a spring weight of 1200. got me wondering what the stock shocks spring is rated at. my bike performed well this weekend, but I did find myself wanting to add dampening. |
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09-12-2016, 09:24 AM | #49 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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09-12-2016, 02:34 PM | #50 | |
Join Date: Sep 2015
Posts: 436
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09-14-2016, 06:26 AM | #51 |
Join Date: May 2016
Posts: 237
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http://www.ebay.com/itm/11-KLX-110-D...FXLEIb&vxp=mtr
ordered one of these to replace the stock shock on the hawk. from what i was able to research its a good fit. ill report back after i get it and install it. |
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09-14-2016, 10:06 AM | #52 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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09-15-2016, 08:17 PM | #53 |
Join Date: May 2016
Posts: 237
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Got the shock installed on the original mounts and its sitting about the same height it was with the old shock and my loweried mounts.
its shorter by 40 mm. so lowers the bike a couple inches compared to stock. Ill snap some pics in the Morning. it has adjustable preload and rebound. as well as a shrader valve for charging. it can be disasembled so rebuildable perhaps. so this means the hawks shock was 320mm and must be very close to a 1200 spring. I left the preload at the setting it came with, maybey half way, and set the rebound to 5 of 10 for an initial setting. the preload may be a touch loose but Ill have to ride it to tell. the original shock was unable to cope with the increased leverage being applied. Riding at Limestone Saturday I fear has mixed the gas with the oil ruining the dampening. the new shock required shimming to center it in the mounts. the shims I already had made for the replacement mount on the bottom worked fine, and i made 2 half as thick for the top mount. bolts were a match at 10mm thick. |
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09-15-2016, 10:11 PM | #54 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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09-16-2016, 05:23 AM | #55 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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to much damping dosn't let the shock re-exstend between close bumbs... is the same as having the spring pre-load set to high as the shock not being able to fully exstend between bumbs is pre-loading the spring for the next bumb... prob not to much of a issue on a hawk but it also makes it hard to hop the rear wheel for going over logs and the like... set the sags.... here is a suspension spring rate calc.... http://www.pontiacracing.net/js_coil_spring_rate.htm ....
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09-16-2016, 09:58 AM | #56 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
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09-19-2016, 06:01 AM | #60 |
Join Date: May 2016
Posts: 237
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wound up with the rebound set to 2. preload i havent changed, im happy with the setting it came with.
we will have to wait to see how durable it is. but it has taken a pounding at Limestone and still feels the same. seat height is 32 inches with this 280mm shock. |
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